Harrow-tooth fastening.



H. M. HUGHES.

' HARROW TOOTH FASTENING.

APPLICATION FILED AUG. 21, 1908.

Patented Mar. 2, 1909.

TINTE TATES HENRY M. HUGHES,

OF ELDON, IOWA.

HABROW-TOOTH FASTENING.

Application filed August 21, 1908.

To all whom it may concern:

Be it known that 1, HENRY M. Huonns, a citizen of the United States of America, and resident of Eldon, Wapello county, 1 Iowa, have invented a new and useful Harrow-Tooth Fastening, of which the following is a specification.

The object of this invention is to provide improved means for securing a harrow tooth. A further object of this invention is to provide an improved bar, tooth and connecj tion for harrows.

A further object of this invention is to rovide an improved fastening for adjustably supporting and holding a harrow tooth. My invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in my l claims and illustrated by the accompanying drawing, in which Figure 1 1s a plan of a harrow oar to which my improved invention 1S applied. 1 1g. 2

is a cross-section on the indicated line 2-2 l of Fig. 1. Fig. 3 is a cross-section of the device on the indicated line 33 of Fig. 1. Fig. 4 is a perspective of the clamping yoke employed in my improved construction. Fig. 5 is a different perspective of the same device. j In the construction of the device as shown, the numerals 10, 11 designate parallel bars relatively thin and wide and of the desired length to reach from end to end of a harrow section. The bars 10, 11 are arranged in pairs slightly spaced apart and one pair may be spaced apart from another pair as desired to produce a harrow section of any desired form. A yoke 12 is mounted on and embraces the bars 10, 11. The yoke 12 is I formed with parallel sides, a connecting piece or bottom 12 integral with said sides and ears 12 12 extending inward from the l u per end portions of the sides parallel with I the bottom piece. The cars 12 12 are formed with notches 13, 1 1 in vertical aline- I ment with an aperture 15 in the bottom piece 12. The aperture 15 and the notches 13, 14 are angular. A harrow tooth. 16, anj gular in cross-section and attenuated or pointed at its lower end, is mounted through the aperture 15 and notches 13, 14. Adjacent end portions of the ears 12 12 are slightly spaced apart. Ears 12 are formed on and extend upward from the sides of the yoke 12 adjacent the ears 12 12 and are formed with apertures 17, 18 in transverse Specification of Letters Patent.

Patented March 2, 1909.

Serial No. 449,631.

alinement. A clamping bolt 19 is mounted through the alining apertures 17 18 in the cars 12 and a nut 20 18 mounted on one end of said bolt. The aperture 17 is angular and the bolt 19 is of the type known as carriage bolt with an angular shank adjacent its head of a size and shape to fit said aperture and prevent rotation of the bolt therein. The body of the clamping bolt 19 is in contact with one side of the harrow tooth 16 and tends to hold said tooth in the notches 1:3, 14.. shown, the nut 20 may be tightened on the bolt 19 and tend to press the cars 12 toward each other, thus moving the sides of the yoke 12 toward each other and causing them to clamp tightly on the bars 10, 11 and cause said bars to grip opposite faces of the tooth.

It will be observed that the parallel bars 10, 11 hold the tooth against longitudinal movement and against oscillation, while the bolt 19 and the cars 12, 12 hold the tooth against oscillation at right angles thereto or in the plane of the trend of the parallel bars.

The bars may be mounted in series to produce a harrow in any desired manner and may be arranged for oscillation or rotary adjustment with the teeth, to incline the teeth in either direction from the vertical, as desired and such arrangement and adjustment of the bars constitutes no part of my present invention.

1 claim as my invention- 1. The combination of parallel bars, a yoke embracing said bars, a tooth mounted between said bars and extending through said yoke, and means for contracting sai yoke.

2. The combination of parallel bars, a yoke mounted on and embracing said bars, said yoke adjustable longitudinally of said bars, a tooth mounted between and transversely of said bars and extending through said yoke, and means for contracting said yoke.

3. The combination of parallel bars, a yoke embracing said bars, said yoke formed with an aperture in its lower end and notches in its upper end, a tooth mounted between and transversely of said bars and extending through said aperture and notches, and a clamping bolt and nut connecting the sides of said yoke.

1. The combination of parallel bars, a yoke embracing said bars, said yoke formed with an aperture in its lower end portion and When the tooth 16 is mounted asnotches in its upper end portion opposite I said aperture, sai yoke also formed with ears, a clamping bolt extending through said ears and across the yoke, a nut on said clamping bolt, and a tooth mounted through said notches and aperture. 5. The combination of a yoke formed with parallel sides,,an end portion connecting said sides, ears extending inward from opposite ends of said sides and spaced apart, the end portion formed with an angular aperture, the ears formed with angular notches, said yoke also formed with outwardly extending ears transversely apertured, one o l l day of June, 1907.

the apertures in an outwardly extending ear beingangular, and a clamping bolt adapted to be mounted in said apertures of the outwardly extending ears, a portion of said clamping bolt formed angular in crosssection and fitting said angular aperture in said ear, and a nut on said clampin bolt.

Signed by me at Eldon, Iowa, t is 24th HENRY M. HUGHES.

Witnesses:

B. E. HARRELD, ROLLIN BALDWIN. 

